Helatoba-Tarutung
Indonesia · Asia
About
Helatoba-Tarutung is a group of sulfurous hot springs in the south of Lake Toba, North Sumatra, Indonesia. It stretches 40 km along the Renun-Toru geological fault zone. The last eruption took place during the Pleistocene age.
Adapted from Wikipedia (CC BY-SA). Photography via Wikimedia Commons.